add global plain text

src/plain-text/index.ts

@@ -0,0 +1,40 @@
+import { PageFooterText, pageFooterZhCn } from './PageFooter';
+import { MainPageText, mainPageZhCn } from './MainPage';
+
+interface TextRecord {
+  pageFooter: PageFooterText;
+  mainPage: MainPageText;
+}
+
+const textZhCn: TextRecord = {
+  pageFooter: pageFooterZhCn,
+  mainPage: mainPageZhCn,
+};
+
+// type Lang = 'zh_CN' | 'en_US' | ...;
+type Lang = 'zh_CN';
+
+class PlainText {
+  private readonly textZhCn: TextRecord;
+  private lang: Lang;
+
+  constructor() {
+    this.textZhCn = textZhCn;
+    this.lang = 'zh_CN';
+  }
+
+  setLang(lang: Lang) {
+    this.lang = lang;
+  }
+
+  get(): TextRecord {
+    if (this.lang == 'zh_CN') {
+      return this.textZhCn;
+    }
+    return this.textZhCn;
+  }
+}
+
+const pt = new PlainText();
+
+export default pt;